Abstract
An aspect encapsulates not only crosscutting behavior, but also crosscutting state. When aspects are stateful, there is a need to specify and control their instantiation. Unfortunately, aspect instantiation is a hard-wired feature in AspectJ. This feature cannot be customized by the application programmer. Specifically, there are six pre-defined instantiation models to choose from, each designated by a keyword: issingleton, perthis, pertarget, percflow, percflowbelow, pertypewithin. In this work, we introduce a new language mechanism and keyword ‘perscope’ that lets third-parties define custom aspect instantiation models. This new keyword replaces the six existing keywords in AspectJ, and may eliminate the need for introducing future ones.
This research was supported in part by the Israel Science Foundation (ISF) under grant No. 926/08.
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Lorenz, D.H., Trakhtenberg, V. (2011). Pluggable Aspect Instantiation Models. In: Apel, S., Jackson, E. (eds) Software Composition. SC 2011. Lecture Notes in Computer Science, vol 6708. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-22045-6_6
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DOI: https://doi.org/10.1007/978-3-642-22045-6_6
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